have a hard time trying to beat cot5 ill help u use this unit:centaur mermaid witch succubus and goblins now for the cards :phoenix hercules strength athena protection and healing (do this on the green general ) now wait for all ur units to come then attack (i forgot to say to use the tank to) then when u get to the castle ues athena protection and hercules strength then on the on the 2nd reavge wave ues the phoenix and use the other cards when u need to and now u just beat cot5
for those, who don't like goblin challenge (epic version), the way to defeat is : hero: vielgraff, karya and simon. units: Valkirie, celestial angel, sky dragon , lord of fire , sylph, succubi. Spells: tower, pheonix, beserk, sheild, meteor and comet( optional). use tower first and make it cower the highest range possible. make your units go offensive as soon as the titans appeared. 2 units will come to the enemy castle fastly which are fire lord and valkirie. if you see you have much mana, use sheild ( mine is lvl5 so 20 secs) and beserk. precaution : don't let dragon and angel die .when you see that your celestial angel is attacking and is teleporting near black goblin, use sheild and then use meteor to kill the whole area. Use pheonix spell each 45 secs . one last thig : this lvl on epic is like a farming mission ok, you can farm gold in this lvl